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| author | Ryder Lee <ryder.lee@mediatek.com> | 2018-11-15 10:08:02 +0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-28 23:04:53 -0500 |
| commit | 849b11605ae6afe4b0d146b64f4eaaa9af0a5071 (patch) | |
| tree | 7b9cbf79531fffbd81f77fa75509fc791bb9175d /drivers/serial/Kconfig | |
| parent | 9dec738a8b843bcdcf22ed3e11c59255e9f79d2b (diff) | |
| download | u-boot-849b11605ae6afe4b0d146b64f4eaaa9af0a5071.tar.gz | |
serial: MediaTek: add high-speed uart driver for MediaTek SoCs
Many SoCs from MediaTek have a high-speed uart. This UART is compatible
with the ns16550 in legacy mode. It has extra registers for high-speed
mode which can reach a maximum baudrate at 921600.
However this UART will no longer be compatible if it's in high-speed mode.
Some BootROM of MediaTek's SoCs will change the UART into high-speed mode
and the U-Boot must use this driver to initialize the UART.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Tested-by: Ryder Lee <ryder.lee@mediatek.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/serial/Kconfig')
| -rw-r--r-- | drivers/serial/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 6625a65b58..3bcc61e731 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -368,6 +368,16 @@ config DEBUG_UART_OMAP You will need to provide parameters to make this work. The driver will be available until the real driver model serial is running. +config DEBUG_UART_MTK + bool "MediaTek High-speed UART" + depends on MTK_SERIAL + help + Select this to enable a debug UART using the MediaTek High-speed + UART driver. + You will need to provide parameters to make this work. The + driver will be available until the real driver model serial is + running. + endchoice config DEBUG_UART_BASE @@ -698,6 +708,16 @@ config ZYNQ_SERIAL This driver supports the Cadence UART. It is found e.g. in Xilinx Zynq/ZynqMP. +config MTK_SERIAL + bool "MediaTek High-speed UART support" + depends on DM_SERIAL + help + Select this to enable UART support for MediaTek High-speed UART + devices. This driver uses driver model and requires a device + tree binding to operate. + The High-speed UART is compatible with the ns16550a UART and have + its own high-speed registers. + config MPC8XX_CONS bool "Console driver for MPC8XX" depends on MPC8xx |